Решение на упр.11 задача 1 от Владимир Великов

Обратно към всички решения

Към профила на Владимир Великов

Код

use std::io::Write;

use std::time::Duration;

use tokio::time::sleep;

async fn run_task(id: usize, duration: Duration) -> Result<String, String> {

sleep(duration).await;

let ms = duration.as_millis();

if ms > 800 {

Err(format!("Task {} timed out", id))

} else {

Ok(format!("Task {} finished in {} ms", id, ms))

}

}

async fn manage_tasks(task_infos: &[(usize, Duration)], w: &mut dyn Write) {

let mut handles = Vec::new();

for &(id, duration) in task_infos {

let handle = tokio::spawn(run_task(id, duration));

handles.push(handle);

}

let mut successful_tasks = 0;

let mut failed_tasks = 0;

for handle in handles {

match handle.await {

Ok(task_result) => {

match task_result {

Ok(msg) => {

writeln!(w, "{}", msg).ok();

successful_tasks += 1;

}

Err(err_msg) => {

writeln!(w, "{}", err_msg).ok();

failed_tasks += 1;

}

}

}

Err(e) => {

writeln!(w, "Error joining task: {}", e).ok();

}

}

}

writeln!(w, "Successful tasks: {}", successful_tasks).ok();

writeln!(w, "Failed tasks: {}", failed_tasks).ok();

}

Лог от изпълнението

Updating crates.io index
     Locking 46 packages to latest compatible versions
   Compiling proc-macro2 v1.0.104
   Compiling libc v0.2.178
   Compiling quote v1.0.42
   Compiling unicode-ident v1.0.22
   Compiling syn v2.0.111
   Compiling parking_lot_core v0.9.12
   Compiling pin-project-lite v0.2.16
   Compiling futures-sink v0.3.31
   Compiling futures-core v0.3.31
   Compiling futures-channel v0.3.31
   Compiling slab v0.4.11
   Compiling futures-io v0.3.31
   Compiling memchr v2.7.6
   Compiling scopeguard v1.2.0
   Compiling futures-task v0.3.31
   Compiling cfg-if v1.0.4
   Compiling smallvec v1.15.1
   Compiling pin-utils v0.1.0
   Compiling lock_api v0.4.14
   Compiling errno v0.3.14
   Compiling signal-hook-registry v1.4.8
   Compiling parking_lot v0.12.5
   Compiling mio v1.1.1
   Compiling socket2 v0.6.1
   Compiling futures-macro v0.3.31
   Compiling tokio-macros v2.6.0
   Compiling futures-util v0.3.31
   Compiling bytes v1.11.0
   Compiling tokio v1.48.0
   Compiling futures-executor v0.3.31
   Compiling futures v0.3.31
   Compiling solution v0.1.0 (/tmp/d20251228-4108951-1tsz0ru/solution)
warning: function `run_task` is never used
 --> src/lib.rs:6:10
  |
6 | async fn run_task(id: usize, duration: Duration) -> Result<String, String> {
  |          ^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: function `manage_tasks` is never used
  --> src/lib.rs:17:10
   |
17 | async fn manage_tasks(task_infos: &[(usize, Duration)], w: &mut dyn Write) {
   |          ^^^^^^^^^^^^

warning: `solution` (lib) generated 2 warnings
    Finished `test` profile [unoptimized + debuginfo] target(s) in 17.44s
     Running tests/solution_test.rs (target/debug/deps/solution_test-f512224d9fb3caf8)

running 1 test
test solution_test::test_basic ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.20s

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